Discontinued and Held-for-sale Operations (Selected Income Statement Information for Discontinued Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest in Joint Venture	40.00%		40.00%
Mortgage Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	$ 0	$ 0	$ 0	$ 0
Pretax income (loss) including direct costs to transact a sale	(1)	(158)	(4)	(1,762)
Tax (benefit) expense - Discontinued Operations	(86)	(40)	(87)	(573)
Insurance Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	0	0	0	190
Pretax income (loss) including direct costs to transact a sale	6	5	6	319
Tax (benefit) expense - Discontinued Operations	7	3	7	(12)
Automotive finance operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	29	119	95	544
Pretax income (loss) including direct costs to transact a sale	46	58	101	752
Tax (benefit) expense - Discontinued Operations	0	28	4	(25)
Commercial Finance Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total net (loss) revenue - Discontinued Operations	0	0	0	0
Pretax income (loss) including direct costs to transact a sale	0	0	23	1
Tax (benefit) expense - Discontinued Operations	$ 0	$ 0	$ 3	$ 0